Acne VulgarisPhase 1/2WITNCT04594759
Weekly Isotretinoin Therapy Study
A Phase 1/2 study testing Isotretinoin in people with Acne Vulgaris, run by Medical University of South Carolina at 1 site in United States.
Trial summary
In current Dermatology practice, options for moderate acne vulgaris remain limited. The mainstay of treatment for moderate acne remains long courses of oral antibiotics despite emerging antibiotic resistance. Read more about this study
- Who is it for?
- Ages 12 years and older
- Conditions the study is for
- Acne Vulgaris
- What is being tested?
- Isotretinoin
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 22 participants
- Where
- 1 siteUnited States
- Study dates
- 11 Nov 2020to 21 Dec 2021
- Phase
- Phase 1/2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 12 years and older
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- All patients 12 years and older with the diagnosis of moderate acne vulgaris
Who cannot join
- Patients who are at baseline on long-term tetracycline antibiotics, long-term trimethoprim-sulfamethoxazole, or on spironolactone for any reason
- Patients who have taken isotretinoin in the past 6 months
- Patients with hypersensitivity to isotretinoin or to any of its components
- Females who are pregnant, likely to become pregnant, or will be breast-feeding during the study period
- Patients with a history of major depression, mania, or psychosis with an active episode during the past year including current psychotic symptoms and/or current suicidal ideation
- Adult patients with cognitive impairment
Show all 11Show fewer
- Patients with baseline kidney or liver disease
- Patients with baseline hypertriglyceridemia
- Patients with history of or current pseudotumor cerebri
- Patients with any clinically significant unstable medical condition which could pose a risk to the safety of the patient
- Inability or unwillingness of subject or legal guardian/representative to give informed consent
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Weekly Isotretinoin Therapy for the Treatment of Moderate Acne Vulgaris
In current Dermatology practice, options for moderate acne vulgaris remain limited. The mainstay of treatment for moderate acne remains long courses of oral antibiotics despite emerging antibiotic resistance. The efficacy of daily to twice daily dosed isotretinoin, an oral vitamin A derivative, for treatment of severe acne has been well established. The purpose of this study is to determine if once weekly dosed isotretinoin is effective for the treatment of patients with moderate acne. Additionally, the study aims to evaluate patient satisfaction and identify any adverse effects on this alternative dosing regimen.
Read the detailed description
In current Dermatology practice, options for moderate acne vulgaris remain limited. Moderate acne is clinically defined as acne that has not responded to at least three months of topical therapy and is not severe enough for initial treatment with a conventional course of isotretinoin (formerly known as Accutane). The mainstay of treatment for moderate acne remains long courses of oral antibiotics, mainly tetracyclines (doxycycline, minocycline) and occasionally trimethoprim-sulfamethoxazole. Males with moderate acne, in particular, are especially limited in their treatment options as they are not eligible for hormonal management (spironolactone, oral contraceptive pills) like their female counterparts. Additionally, even for those regardless of gender who may eventually qualify for a traditional isotretinoin course, many insurance companies first require failure to respond to at least three months of oral antibiotics. Nagler et. al found that the average antibiotic use for moderate to severe acne prior to receiving isotretinoin was 331 days, with 15.3% of patients prescribed antibiotics for three months or less, 88% for six months or more, and 46% for at least one year.1 Despite the widespread use of oral antibiotics in acne, antibiotic resistance is considered a global threat per the CDC2, and there have been calls to limit their use in acne because of concerns of bacterial resistance3,4,5. Because of this, there is a significant need for more research on alternative treatment options for moderate acne.
Once weekly isotretinoin dosing has the potential to significantly improve moderate acne with good patient satisfaction and safety profile; however, no study findings on this treatment option have been published to date. The efficacy of isotretinoin, an oral vitamin A derivative, for treatment of acne has been well established. The traditional treatment course for severe acne consists of once to twice daily dosing (0.5-1 mg/kg/day) for 4-7 months (or 150mg/kg total cumulative dose). Though efficacious, there are numerous reported side-effects due to achieving the cumulative dose rapidly by once to twice daily dosing, such as severe dry skin, lips, and eyes, as well as liver enzyme and lipid abnormalities. Because of this, there have been studies exploring alternative isotretinoin dosing regimens including microdose, lower daily dose regimens (0.15-0.4 mg/kg/day6, 0.25-0.4 mg/kg/day7, 0.3-0.4 mg/kg/day8,9, in addition to 5 mg/day10 and 0.15-0.28 mg/kg/day with additional of local application of 1% clindamycin gel every other day11) and daily dosing for 7-10 consecutive days (0.5-0.7 mg/kg/day) out of each month only.7,12,13,14 All studies had favorable outcomes with alternative dosing, despite the lower total cumulative dose versus conventional dosing. Those who also analyzed adverse effect rates with alternative isotretinoin dosing found that these were either rarely observed or similar to conventional dosing.6,8,9,10,12,14 In contrast, the potential adverse effects of oral antibiotics used for acne include photosensitivity and nausea/vomiting (doxycycline), drug-induced pigment deposition and drug-induced systemic lupus erythematosus (minocycline), and angioedema and drug rashes including drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome (trimethoprim-sulfamethoxazole). Interestingly, rates of acne recurrence between alternative isotretinoin dosing and conventional dosing were similar at follow-up,6,7,9 despite a much older study from 1984 that found otherwise.15 Additionally, cost of alternative isotretinoin dosing was lower than with conventional dosing,8,9,13 and patient satisfaction was highest in the alternative dosing groups.7,10 For these reasons, this study aims to evaluate the efficacy of once weekly isotretinoin dosing (1-1.5 mg/kg/week) as a potential alternative to oral antibiotics for the treatment of patients with moderate acne. Secondary endpoints include patient satisfaction and adverse effects.
- Conditions
- Acne Vulgaris
- Being tested
- Isotretinoin
- Medical subject headings
- Acne Vulgaris
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
IsotretinoinDrug
Participants will be getting isotretinoin (1-1.5 mg/kg/week)
| Study group | Role | What they receive |
|---|---|---|
| Treatment Group | Experimental | Not described Receives: Drug: Isotretinoin |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants That Showed Improvement in Their Visible Acne (Efficacy of Once Weekly Isotretinoin)
Will look at clinical photos before, during, and after treatment and grade acne using a validated, clinical grading system (Comprehensive Acne Severity Scale, CASS) with "0" being clear skin and "5" being very severe acne. Participants are eligible for the study if their score is 3 or higher. An improvement in their visible acne is a score of 2, 1, or 0 at the end of the 4 months of treatment.
Measured: Baseline and end of treatment, approximately 4 months
Secondary outcomes (2)
Number of Participants With a Change in Quality of Life
Participants will use the Dermatology Life Quality Index survey which measures how much their skin problems affect their life. 10 questions are asked with answers "Very much," " A lot," "A little," "Not at all," or "Not relevant". The answers correlate to a number ("Very much" =3, " A lot" = 2, "A little"=1, "Not at all"= 0, "Not relevant"=0) and the answered are added together to get a score for that month. The higher the score the more their skin impacts their day to day activities. An improvement in their quality of life is a lower score at 4 months compared to baseline score.
Measured: Baseline, monthly, and end of treatment, total of 4 months
Number of Side Effects Reported at the End of 4 Months
Participants will fill out a survey regarding nonserious and serious adverse events.
Measured: through study completion, an average of 4 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 Oct 2020
- Study start11 Nov 2020
- Primary completion21 Dec 2021
- Study completion21 Dec 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (15)Papers the sponsor has linked to this study.
- Other trials for Acne VulgarisStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1/2
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 22 participants (actual)
Sponsor and investigators
- Lead sponsor
- Medical University of South Carolina
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Samantha Karlin, MD, Medical University of South Carolina
- Investigators
- Samantha Karlin, MD, Principal investigator, Medical University of South Carolina
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04594759
- Sponsor's protocol ID
- 00103493
- Acronym
- WIT
- Status last verified
- Apr 2022
- First submitted
- 14 Oct 2020
- Last updated
- 9 May 2022
- Results posted
- Yes, on ClinicalTrials.gov
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: The individual participant data collected during the study after de-identification
Publications
Nagler AR, Milam EC, Orlow SJ. The use of oral antibiotics before isotretinoin therapy in patients with acne. J Am Acad Dermatol. 2016 Feb;74(2):273-9. doi: 10.1016/j.jaad.2015.09.046. Epub 2015 Oct 30.
PubMed 26525749Center for Disease Control (https://www.cdc.gov/drugresistance/biggest-threats.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fdrugresistance%2Fbiggest_threats.html)
Dreno B, Thiboutot D, Gollnick H, Bettoli V, Kang S, Leyden JJ, Shalita A, Torres V; Global Alliance to Improve Outcomes in Acne. Antibiotic stewardship in dermatology: limiting antibiotic use in acne. Eur J Dermatol. 2014 May-Jun;24(3):330-4. doi: 10.1684/ejd.2014.2309.
PubMed 24721547Bowe WP. Antibiotic resistance and acne: where we stand and what the future holds. J Drugs Dermatol. 2014 Jun;13(6):s66-70.
PubMed 24918574Ross JI, Snelling AM, Carnegie E, Coates P, Cunliffe WJ, Bettoli V, Tosti G, Katsambas A, Galvan Perez Del Pulgar JI, Rollman O, Torok L, Eady EA, Cove JH. Antibiotic-resistant acne: lessons from Europe. Br J Dermatol. 2003 Mar;148(3):467-78. doi: 10.1046/j.1365-2133.2003.05067.x.
PubMed 12653738Mandekou-Lefaki I, Delli F, Teknetzis A, Euthimiadou R, Karakatsanis G. Low-dose schema of isotretinoin in acne vulgaris. Int J Clin Pharmacol Res. 2003;23(2-3):41-6.
PubMed 15018017Lee JW, Yoo KH, Park KY, Han TY, Li K, Seo SJ, Hong CK. Effectiveness of conventional, low-dose and intermittent oral isotretinoin in the treatment of acne: a randomized, controlled comparative study. Br J Dermatol. 2011 Jun;164(6):1369-75. doi: 10.1111/j.1365-2133.2010.10152.x. Epub 2011 May 17.
PubMed 21114478Amichai B, Shemer A, Grunwald MH. Low-dose isotretinoin in the treatment of acne vulgaris. J Am Acad Dermatol. 2006 Apr;54(4):644-6. doi: 10.1016/j.jaad.2005.11.1061.
PubMed 16546586Kotori MG. Low-dose Vitamin "A" Tablets-treatment of Acne Vulgaris. Med Arch. 2015 Feb;69(1):28-30. doi: 10.5455/medarh.2015.69.28-30. Epub 2015 Feb 21.
PubMed 25870473Rademaker M, Wishart JM, Birchall NM. Isotretinoin 5 mg daily for low-grade adult acne vulgaris--a placebo-controlled, randomized double-blind study. J Eur Acad Dermatol Venereol. 2014 Jun;28(6):747-54. doi: 10.1111/jdv.12170. Epub 2013 Apr 26.
PubMed 23617693Sardana K, Garg VK, Sehgal VN, Mahajan S, Bhushan P. Efficacy of fixed low-dose isotretinoin (20 mg, alternate days) with topical clindamycin gel in moderately severe acne vulgaris. J Eur Acad Dermatol Venereol. 2009 May;23(5):556-60. doi: 10.1111/j.1468-3083.2008.03022.x. Epub 2009 Jan 9.
PubMed 19143903Akman A, Durusoy C, Senturk M, Koc CK, Soyturk D, Alpsoy E. Treatment of acne with intermittent and conventional isotretinoin: a randomized, controlled multicenter study. Arch Dermatol Res. 2007 Dec;299(10):467-73. doi: 10.1007/s00403-007-0777-2. Epub 2007 Aug 21.
PubMed 17710426Goulden V, Clark SM, McGeown C, Cunliffe WJ. Treatment of acne with intermittent isotretinoin. Br J Dermatol. 1997 Jul;137(1):106-8.
PubMed 9274635Kaymak Y, Ilter N. The effectiveness of intermittent isotretinoin treatment in mild or moderate acne. J Eur Acad Dermatol Venereol. 2006 Nov;20(10):1256-60. doi: 10.1111/j.1468-3083.2006.01784.x.
PubMed 17062042Strauss JS, Rapini RP, Shalita AR, Konecky E, Pochi PE, Comite H, Exner JH. Isotretinoin therapy for acne: results of a multicenter dose-response study. J Am Acad Dermatol. 1984 Mar;10(3):490-6. doi: 10.1016/s0190-9622(84)80100-0.
PubMed 6233335
Study at a glance
From the registry record, last updated by the sponsor on 9 May 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Weekly Isotretinoin Therapy for the Treatment of Moderate Acne Vulgaris
- ClinicalTrials.gov ID
- NCT04594759
- Acronym / sponsor ID
- WIT / 00103493
- Conditions
- Acne Vulgaris
- Phase
- Phase 1/2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 22 participants (actual)
- Lead sponsor
- Medical University of South CarolinaUniversity, hospital or other
- Study start
- 11 Nov 2020 (actual)
- Primary completion
- 21 Dec 2021 (actual)
- Study completion
- 21 Dec 2021 (actual)
- First posted
- 20 Oct 2020 (actual)
- Results
- Posted 9 May 2022
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
In current Dermatology practice, options for moderate acne vulgaris remain limited. The mainstay of treatment for moderate acne remains long courses of oral antibiotics despite emerging antibiotic resistance. The efficacy of daily to twice daily dosed isotretinoin, an oral vitamin A derivative, for treatment of severe acne has been well established. The purpose of this study is to determine if once weekly dosed isotretinoin is effective for the treatment of patients with moderate acne. Additionally, the study aims to evaluate patient satisfaction and identify any adverse effects on this alternative dosing regimen.
Detailed description
In current Dermatology practice, options for moderate acne vulgaris remain limited. Moderate acne is clinically defined as acne that has not responded to at least three months of topical therapy and is not severe enough for initial treatment with a conventional course of isotretinoin (formerly known as Accutane). The mainstay of treatment for moderate acne remains long courses of oral antibiotics, mainly tetracyclines (doxycycline, minocycline) and occasionally trimethoprim-sulfamethoxazole. Males with moderate acne, in particular, are especially limited in their treatment options as they are not eligible for hormonal management (spironolactone, oral contraceptive pills) like their female counterparts. Additionally, even for those regardless of gender who may eventually qualify for a traditional isotretinoin course, many insurance companies first require failure to respond to at least three months of oral antibiotics. Nagler et. al found that the average antibiotic use for moderate to severe acne prior to receiving isotretinoin was 331 days, with 15.3% of patients prescribed antibiotics for three months or less, 88% for six months or more, and 46% for at least one year.1 Despite the widespread use of oral antibiotics in acne, antibiotic resistance is considered a global threat per the CDC2, and there have been calls to limit their use in acne because of concerns of bacterial resistance3,4,5. Because of this, there is a significant need for more research on alternative treatment options for moderate acne.
Once weekly isotretinoin dosing has the potential to significantly improve moderate acne with good patient satisfaction and safety profile; however, no study findings on this treatment option have been published to date. The efficacy of isotretinoin, an oral vitamin A derivative, for treatment of acne has been well established. The traditional treatment course for severe acne consists of once to twice daily dosing (0.5-1 mg/kg/day) for 4-7 months (or 150mg/kg total cumulative dose). Though efficacious, there are numerous reported side-effects due to achieving the cumulative dose rapidly by once to twice daily dosing, such as severe dry skin, lips, and eyes, as well as liver enzyme and lipid abnormalities. Because of this, there have been studies exploring alternative isotretinoin dosing regimens including microdose, lower daily dose regimens (0.15-0.4 mg/kg/day6, 0.25-0.4 mg/kg/day7, 0.3-0.4 mg/kg/day8,9, in addition to 5 mg/day10 and 0.15-0.28 mg/kg/day with additional of local application of 1% clindamycin gel every other day11) and daily dosing for 7-10 consecutive days (0.5-0.7 mg/kg/day) out of each month only.7,12,13,14 All studies had favorable outcomes with alternative dosing, despite the lower total cumulative dose versus conventional dosing. Those who also analyzed adverse effect rates with alternative isotretinoin dosing found that these were either rarely observed or similar to conventional dosing.6,8,9,10,12,14 In contrast, the potential adverse effects of oral antibiotics used for acne include photosensitivity and nausea/vomiting (doxycycline), drug-induced pigment deposition and drug-induced systemic lupus erythematosus (minocycline), and angioedema and drug rashes including drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome (trimethoprim-sulfamethoxazole). Interestingly, rates of acne recurrence between alternative isotretinoin dosing and conventional dosing were similar at follow-up,6,7,9 despite a much older study from 1984 that found otherwise.15 Additionally, cost of alternative isotretinoin dosing was lower than with conventional dosing,8,9,13 and patient satisfaction was highest in the alternative dosing groups.7,10 For these reasons, this study aims to evaluate the efficacy of once weekly isotretinoin dosing (1-1.5 mg/kg/week) as a potential alternative to oral antibiotics for the treatment of patients with moderate acne. Secondary endpoints include patient satisfaction and adverse effects.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Treatment Group | Experimental | Drug: Isotretinoin |
Who may qualify
- Ages
- 12 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (1 listed)
- All patients 12 years and older with the diagnosis of moderate acne vulgaris
Key exclusion criteria (11 listed)
- Patients who are at baseline on long-term tetracycline antibiotics, long-term trimethoprim-sulfamethoxazole, or on spironolactone for any reason
- Patients who have taken isotretinoin in the past 6 months
- Patients with hypersensitivity to isotretinoin or to any of its components
- Females who are pregnant, likely to become pregnant, or will be breast-feeding during the study period
- Patients with a history of major depression, mania, or psychosis with an active episode during the past year including current psychotic symptoms and/or current suicidal ideation
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| IsotretinoinParticipants will be getting isotretinoin (1-1.5 mg/kg/week) | Drug | Treatment Group |
Primary outcome
Number of Participants That Showed Improvement in Their Visible Acne (Efficacy of Once Weekly Isotretinoin)
Time frame: Baseline and end of treatment, approximately 4 months
Will look at clinical photos before, during, and after treatment and grade acne using a validated, clinical grading system (Comprehensive Acne Severity Scale, CASS) with "0" being clear skin and "5" being very severe acne. Participants are eligible for the study if their score is 3 or higher. An improvement in their visible acne is a score of 2, 1, or 0 at the end of the 4 months of treatment.
2 secondary outcomes
Number of Participants With a Change in Quality of Life
Time frame: Baseline, monthly, and end of treatment, total of 4 months
Number of Side Effects Reported at the End of 4 Months
Time frame: through study completion, an average of 4 months
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 May 2022.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 26525749Nagler AR, Milam EC, Orlow SJ. The use of oral antibiotics before isotretinoin therapy in patients with acne. J Am Acad Dermatol. 2016 Feb;74(2):273-9. doi: 10.1016/j.jaad.2015.09.046. Epub 2015 Oct 30.
- BackgroundCenter for Disease Control (https://www.cdc.gov/drugresistance/biggest-threats.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fdrugresistance%2Fbiggest_threats.html)
- Background: PubMed 24721547Dreno B, Thiboutot D, Gollnick H, Bettoli V, Kang S, Leyden JJ, Shalita A, Torres V; Global Alliance to Improve Outcomes in Acne. Antibiotic stewardship in dermatology: limiting antibiotic use in acne. Eur J Dermatol. 2014 May-Jun;24(3):330-4. doi: 10.1684/ejd.2014.2309.
- Background: PubMed 24918574Bowe WP. Antibiotic resistance and acne: where we stand and what the future holds. J Drugs Dermatol. 2014 Jun;13(6):s66-70.
- Background: PubMed 12653738Ross JI, Snelling AM, Carnegie E, Coates P, Cunliffe WJ, Bettoli V, Tosti G, Katsambas A, Galvan Perez Del Pulgar JI, Rollman O, Torok L, Eady EA, Cove JH. Antibiotic-resistant acne: lessons from Europe. Br J Dermatol. 2003 Mar;148(3):467-78. doi: 10.1046/j.1365-2133.2003.05067.x.
- Background: PubMed 15018017Mandekou-Lefaki I, Delli F, Teknetzis A, Euthimiadou R, Karakatsanis G. Low-dose schema of isotretinoin in acne vulgaris. Int J Clin Pharmacol Res. 2003;23(2-3):41-6.
- Background: PubMed 21114478Lee JW, Yoo KH, Park KY, Han TY, Li K, Seo SJ, Hong CK. Effectiveness of conventional, low-dose and intermittent oral isotretinoin in the treatment of acne: a randomized, controlled comparative study. Br J Dermatol. 2011 Jun;164(6):1369-75. doi: 10.1111/j.1365-2133.2010.10152.x. Epub 2011 May 17.
- Background: PubMed 16546586Amichai B, Shemer A, Grunwald MH. Low-dose isotretinoin in the treatment of acne vulgaris. J Am Acad Dermatol. 2006 Apr;54(4):644-6. doi: 10.1016/j.jaad.2005.11.1061.
- Background: PubMed 25870473Kotori MG. Low-dose Vitamin "A" Tablets-treatment of Acne Vulgaris. Med Arch. 2015 Feb;69(1):28-30. doi: 10.5455/medarh.2015.69.28-30. Epub 2015 Feb 21.
- Background: PubMed 23617693Rademaker M, Wishart JM, Birchall NM. Isotretinoin 5 mg daily for low-grade adult acne vulgaris--a placebo-controlled, randomized double-blind study. J Eur Acad Dermatol Venereol. 2014 Jun;28(6):747-54. doi: 10.1111/jdv.12170. Epub 2013 Apr 26.
- Background: PubMed 19143903Sardana K, Garg VK, Sehgal VN, Mahajan S, Bhushan P. Efficacy of fixed low-dose isotretinoin (20 mg, alternate days) with topical clindamycin gel in moderately severe acne vulgaris. J Eur Acad Dermatol Venereol. 2009 May;23(5):556-60. doi: 10.1111/j.1468-3083.2008.03022.x. Epub 2009 Jan 9.
- Background: PubMed 17710426Akman A, Durusoy C, Senturk M, Koc CK, Soyturk D, Alpsoy E. Treatment of acne with intermittent and conventional isotretinoin: a randomized, controlled multicenter study. Arch Dermatol Res. 2007 Dec;299(10):467-73. doi: 10.1007/s00403-007-0777-2. Epub 2007 Aug 21.
- Individual participant dataSharing planned: Yes. The individual participant data collected during the study after de-identification
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Samantha Karlin, MD principal investigator
Medical University of South Carolina
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1/2 study testing Isotretinoin in people with Acne Vulgaris, run by Medical University of South Carolina at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 9 May 2022. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 9 May 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Participants That Showed Improvement in Their Visible Acne (Efficacy of Once Weekly Isotretinoin) (time frame: Baseline and end of treatment, approximately 4 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04594759, which also lists 15 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 May 2022.